scholarly journals Mass Transfer and Diffusion Coefficient of ᴅ-Allulose during Osmotic Dehydration

2016 ◽  
Vol 3 (2) ◽  
Author(s):  
Hadipernata Mulyana ◽  
Keyword(s):  
Mass Transfer ◽  
Diffusion Coefficient ◽  
Osmotic Dehydration ◽  
And Diffusion

scholarly journals Mass Transfer and Diffusion Coefficient of ᴅ-Allulose during Osmotic Dehydration

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Mulyana Hadipernata ◽  
Masahiro Ogawa
Keyword(s):  
Mass Transfer ◽  
Diffusion Coefficient ◽  
Room Temperature ◽  
Sucrose Solution ◽  
Osmotic Dehydration ◽  
Potential Effect ◽  
Sugar Solution ◽  
Mass Transfer Kinetics ◽  
Osmotic Solution ◽  
And Diffusion

This study was undertaken to identify the effect of ᴅ-allulose and sucrose solution on mass transport phenomena and diffusion coefficient of sugar solution. Potato samples were immersed in sugar osmotic solution (20% w/v) at room temperature (20°C). The mass transfer kinetics was measured at 30 min, 1 h, 2 h, 4 h, 6 h, 8 h and 16 h. The optimum value of ᴅ-allulose content in sample after immersion with ᴅ-allulose solution was higher compared with sucrose content in sample after immersion with sucrose solution. Also, ᴅ-allulose has higher diffusion coefficient compared with sucrose. Diffusion coefficient of ᴅ-allulose and sucrose were 6.43 x 10-10m2s-1 and 2.83 x 10-10m2s-1, respectively. ᴅ-Allulose has potential effect to accelerate an ingredient movement into the food materials. The acceleration movement of ingredients such as ᴅ-allulose into the food materials may be useful in food processing and preservation such as curing process of meat and fish.

scholarly journals Kinetics of mass transfer during osmotic dehydration of auyama (Caribbean pumpkin) in ternary solutions

DYNA ◽  
2019 ◽  
Vol 86 (209) ◽  
pp. 120-125
Author(s):  
Jhonatan Andres Rodriguez Manrique ◽  
Angélica Maria Torregroza Espinosa ◽  
Rodrigo Daniel Salgado Ordosgoitia
Keyword(s):  
Mass Transfer ◽  
Weight Loss ◽  
Diffusion Coefficient ◽  
Weight Reduction ◽  
Osmotic Dehydration ◽  
Salt Water ◽  
Solid Gain ◽  
Processing Times ◽  
Ternary Solutions ◽  
Kinetics Of

The aim of this study was to address the modeling of aspects such as weight reduction (WR), solid gain (SG) and weight-loss (WL) in Caribbean pumpkin samples osmotically dehydrated in ternary solutions. For this purpose, osmotic dehydration was carried out using two ternary solutions: stevia-salt-water (S1) and glucose-salt-water (S2) at different concentrations (20%, 30% and 40% w/w), and processing times of 40 min, 80 min, 120 min, and 160 min. Also, the diffusion coefficient was determined and the analysis of variance with orthogonal polynomials was performed to find the best treatment for dehydration of auyama samples (p≤0.05). The results suggest that the solution constituted by stevia-salt-water, allows greater reduction of weight and gain of solids when a concentration of 40% is used at a time of 78.12min until reaching a humidity percentage of 60.06%. Similarly, the values of the diffusion coefficient for this solution ratify that the increase in concentration generates less resistance to mass transfer.

scholarly journals The Effect of Particle Drag and Wall Absorption on Mass Transfer in Concentric Annulus Flows

2011 ◽  
Vol 10 (1) ◽  
pp. 1-13
Author(s):  
B. Umadevi ◽  
Dinesh P.A. ◽  
Indira R. Rao ◽  
Vinay C.V.
Keyword(s):  
Mass Transfer ◽  
Diffusion Coefficient ◽  
Diffusion Coefficients ◽  
Dispersion Model ◽  
Transport Coefficients ◽  
Time Dependent ◽  
Exchange Coefficient ◽  
Concentric Annulus ◽  
Annular Gap ◽  
And Diffusion

The effects of the irreversible boundary reaction and the particle drag on mass transfer are studied analytically in concentric annulus flows. The solution of mathematical model, based on the generalized dispersion model brings out the mass transport following by the insertion of catheter on an artery in terms of the three effective transport coefficients, viz., the exchange, convection and diffusion coefficient. A general expression is derived which shows clearly the time dependent nature of the coefficients in the dispersive model. The complete time dependent expression for the exchange coefficient is obtained explicitly and independent of velocity distribution in the flow; however it does depend on the initial solute distribution. Because of the complexity of the problem only asymptotic large time evaluations are made for the convective and diffusion coefficients, but these are sufficient to give the physical insight into the nature of the problem of the effects of drag and absorption parameters. It is found that as absorption parameter increases exchange and convection coefficients will be enhanced, but diffusion coefficient will be reduced. After certain period of time exchange coefficient will be constant for different values annular gap. As the drag parameter increases convection and diffusion coefficients will be reduced. With the enhancement of catheter radius i.e., the annular gap will be reduced then the convection and diffusion coefficients will be decreased.

MASS TRANSFER AND DIFFUSION COEFFICIENT DETERMINATION IN THE WET AND DRY SALTING OF MEAT

1998 ◽  
Vol 16 (9-10) ◽  
pp. 2095-2115 ◽  
Author(s):  
E. Sabadini ◽  
B. C. Carvalho ◽  
P.J do A. Sobral ◽  
M.D. Hubinger
Keyword(s):  
Mass Transfer ◽  
Diffusion Coefficient ◽  
And Diffusion

scholarly journals MATH SIMULATION OF MASS TRANSFER FROM VIBRATING SURFACE

2020 ◽  
Vol 2020 (1) ◽  
pp. 99-103
Author(s):  
Ivan Semenov ◽  
Marina Chernigovskaya
Keyword(s):  
Mass Transfer ◽  
Diffusion Coefficient ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Transfer Rate ◽  
Mass Transfer Rate ◽  
And Diffusion

Results of modeling of mass transfer from a vibrating cone are given in the paper. Effect of such parameters as frequency, amplitude, height of the cone and diffusion coefficient on mass transfer rate is considered. An equation for calculation of mass transfer coefficient is obtained for similar processes.

PERMEABILITY AND DIFFUSION COEFFICIENT PREDICTION OF FRACTAL POROUS MEDIA WITH NANOSCALE PORES FOR GAS TRANSPORT

2018 ◽  
Vol 21 (12) ◽  
pp. 1253-1263
Author(s):  
Ruifei Wang ◽  
Hongqing Song ◽  
Jiulong Wang ◽  
Yuhe Wang
Keyword(s):  
Porous Media ◽  
Diffusion Coefficient ◽  
Gas Transport ◽  
And Diffusion
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